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| Number | Title | Issue Date |
| 7838710 | Selective hydrogenation process and catalyst A supported catalyst for selective hydrogenation of acetylenes comprising 3-15 wt. % Ni promoted with 0.005-0.2 Pd on a support. The catalyst is prepared by depositing nickel promoted with palladium on a support, containing one or more optional elements from copper,... | 11/23/2010 |
| 7342145 | Process for refining liquefied petroleum gas in a commercial scale The present invention relates to a novel process for refining the liquefied petroleum gas (LPG) in a commercial scale. The process comprises: sequentially performing fine desulfurization and mercaptan conversion of the LPG after alcohol amine treatment through desul... | 03/11/2008 |
| 7297824 | Ni hydrogenation catalysts, manufacture and use Improved Ni catalysts for hydrogenation reactions are disclosed. The catalysts are useful for hydrogenation such as selective hydrogenation of acetylenic impurities in crude olefin and diolefin streams. The catalysts are prepared by depositing nickel on a porous sup... | 11/20/2007 |
| 7230148 | Process for hydrogenation of aromatics in hydrocarbon feedstocks containing thiopheneic compounds The present invention relates to an improved process for the hydrogenation of aromatics in hydrocarbon feedstocks containing thiopheneic compounds as impurities, the aromatics hydrogenation being conducted in a hydrogenation reactor in the presence of a nickel based... | 06/12/2007 |
| 7208646 | Selective hydrogenation of butadiene A process for the selective hydrogenation of dienes in mixed streams of olefin containing hydrocarbons, such as butadiene in a mixed C4 stream with minimum loss of monoolefins is disclosed wherein the reactor is operated at conditions which induce pulse f... | 04/24/2007 |
| 7169430 | Low trans-stereoisomer shortening systems Shortening systems are prepared which include hydrogenated edible oils that are hydrogenated in a manner to minimize the formation of trans-stereoisomers. A conditioned catalyst is used which disfavors trans-stereoisomer formation without significantly negatively im... | 01/30/2007 |
| 7081555 | Process for hydrogenation of aromatics in hydrocarbon feedstocks containing thiopheneic compounds The present invention relates to an improved process for the hydrogenation of aromatics in hydrocarbon feedstocks containing thiopheneic compounds as impurities, the aromatics hydrogenation being conducted in a hydrogenation reactor in the presence of a nickel based... | 07/25/2006 |
| 7078130 | Metallic mesoporous transition metal oxide molecular sieves, room temperature activation of dinitrogen and ammonia production This invention provides novel stable metallic mesoporous transition metal oxide molecular sieves and methods for their production. The sieves have high electrical conductivity and may be used as solid electrolyte devices, e.g., in fuel cells, as sorbents, e.g. for h... | 07/18/2006 |
| 7070690 | Process for conversion of hydrocarbons on a catalyst with controlled acidity The invention relates to a process for conversion of hydrocarbons in the presence of at least one catalyst with controlled acidity, characterized in that the level of activity of said catalyst in isomerization of the cyclohexane is less than 0.10 and/or in that the ... | 07/04/2006 |
| 6777567 | Ferrocenyl diphosphines and their use Compounds of the formula (I) and (Ia) in the form of racemates, mixtures of diastereomers or in essentially enantiomerically pure form, (I), (Ia), where R is hydrogen, C1-C8alkyl, C5-C12cycloakyl, phenyl or phenyl substitu... | 08/17/2004 |
| 6676919 | Method for producing platinum metal catalysts The invention relates to a method for producing catalysts by immersion coating a metallic support with at least one platinum metal. An aqueous medium which comprises at least one platinum metal complex, at least one reduction agent and at least one comple... | 01/13/2004 |
| 6569318 | Process for conversion of hydrocarbons on a catalyst with controlled acidity The invention relates to a process for conversion of hydrocarbons in the presence of at least one catalyst with controlled acidity, characterized in that the level of activity of said catalyst in isomerization of the cyclohexane is less than 0.10 and/or i... | 05/27/2003 |
| 6558533 | Process for sulfur removal from hydrocarbon liquids The present invention is directed to a method of desulfurization of a sulfur laden hydrocarbon liquids that comprises contacting the liquid with a sponge nickel metal alloy, removing the sulfur free liquid, regeneration of the alloy by contact with an aqu... | 05/06/2003 |
| 6534436 | Method for the production of cobalt catalysts supported on silicon dioxide and their use The invention relates to catalysts comprising cobalt supported on a solid silica support and, in particular, to a method for manufacturing such catalysts. The catalysts may be prepared by slurrying a silica powder or impregnating a silica particle with a ... | 03/18/2003 |
| 6455023 | Metallic catalysts for non-neutral liquid media Carbon monolith-supported catalysts with high leach resistance used in catalytic applications involving strong acidic and basic conditions in a pH range of from 0 to 6.5 and from 7.5 to 14, are respectively described. The leach resistance of the catalyst ... | 09/24/2002 |
| 6388149 | Process for reacting an organic compound in the presence of a supported ruthenium catalyst A process for the reaction of an organic compound in the presence of a catalyst comprising, as active metal, ruthenium alone or together with at least one Group Ib, VIIb, or VIIIb metal in an amount of from 0.01 to 30 wt %, based on the total weight of th... | 05/14/2002 |
| 6280608 | Layered catalyst composition and processes for preparing and using the composition This invention relates to a layered catalyst composition, a process for preparing the composition and processes for using the composition. The catalyst composition comprises an inner core such as alpha-alumina, and an outer layer bonded to the inner core ... | 08/28/2001 |
| 6118034 | Process for the selective hydrogenation of dienes in reformate flows In the process for the selective hydrogenation of dienes in diene-containing feed streams, a diene-containing feed stream is hydrogenated over a nickel-containing precipitated catalyst at from 40 to 100° C., a pressure of from 3 to 20 bar and a WHSV (wei... | 09/12/2000 |
| 6099922 | Thermally insulated metal surface protected against metal dusting corrosion The metal surface protected against metal-dusting corrosion has an insulating layer of a gas-permeable, thermally insulating material. The side of the thermal insulating layer that is colder during operation is in direct vicinity of the metal surface, and... | 08/08/2000 |
| 5898091 | Process and plant for the conversion of olefinic C4 and C5 cuts to an ether and to propylene For the conversion of an olefinic C4 or C5 cut to an alkyl-tertiobutylether or alkyl-tertioamylether and to propylene, by metathesis, the process comprises four successive steps: (1) selective hydrogenation of the diolefins with simu... | 04/27/1999 |
| 5865985 | Process for the production of diesel A process for the production of a diesel fuel includes contacting a feedstock comprising cracked stocks in the presence of hydrogen under conditions of elevated temperature and pressure with a first catalyst comprising a Group VI hydrogenation metal compo... | 02/02/1999 |
| 5856603 | Process for the production of cyclohexane The invention is directed to a process for the production of cyclohexane by catalytic hydrogenation of benzene using hydrogen, said process comprising the hydrogenation of benzene in the presence of a supported nickel catalyst having a nickel content of a... | 01/05/1999 |
| 5841012 | Hydrogenation catalysts for low concentration of chloroprene and trichloroethylene in ethane dichloride stream High space velocity catalysts useful in the substantial elimination of chloroprene and trichloroethylene from an industrial product stream of ethane dichloride; the last is useful in the production of vinyl chloride.... | 11/24/1998 |
| 5831138 | Dispersed metal sulfide catalysts for hydroprocessing The present invention is directed toward a catalyst composition comprising a catalyst prepared by a process comprising: (a) impregnating an oxide precursor selected from the group consisting of rare earth oxide precursors, yttria precursors and mixtures t... | 11/03/1998 |
| 5777186 | Process for hydrogenating benzene in hydrocarbon oils A process for selectively hydrogenating benzene in a hydrocarbon oil is disclosed. The process comprises reacting the hydrocarbon oil with hydrogen gas in the presence of a hydrogenation catalyst comprising at least one metal in Group VIII of the Periodic... | 07/07/1998 |
| 5417844 | Selective hydrogenation of diolefins in steam cracking petrol on catalysts based on a support metal in which an organic compound has been incorporated prior to loading into the reactor The invention relates to a process for the selective hydrogenation of diolefins in steam cracking petrol in the presence of a nickel catalyst and is characterized in that prior to the use of the catalyst, a suphur-containing organic compound is incorporat... | 05/23/1995 |
| 5334790 | Process and catalyst for partially hydrogenating aromatics to produce cycloolefins This is a catalyst and a process for partially hydrogenating polycyclic and monocyclic aromatic hydrocarbons such as benzene, naphthalenes, biphenyls, and alkylbenzenes to produce the corresponding cycloolefins. The catalyst is a hydrogenation catalyst co... | 08/02/1994 |
| 5256163 | Flow liquid-phase chemical reaction process The present invention provides a flow liquid-phase chemical reaction system in which a high pressure reservoir unit holds a solvent solution which contains an organic reactant and a gas reactant. The quantity of gas reactant dissolved in the solvent solut... | 10/26/1993 |
| 5208405 | Selective hydrogenation of diolefins A process for selectively hydrogenating C4 -C10 diolefins to the corresponding monoolefins is carried out with a catalyst comprising (a) nickel metal and/or compound(s), (b) silver metal and/or compound(s), and (c) a solid inorganic ... | 05/04/1993 |
| 5171907 | Preparation of hydrogenation catalyst and hydrogenation process therewith A cobalt carbonyl phosphine complex useful for hydrogenation of cyclic polyenes to corresponding cyclic monoenes is prepared by reaction of dicobalt carbonyl and a phosphine compound in at least one non-oxygenated aliphatic solvent. Selective hydrogenatio... | 12/15/1992 |
| 5068477 | Process for reducing a refining catalyst and use of the catalyst in hydrogenation This invention concerns a process for reducing a refining catalyst before it is put into use, the catalyst containing a support and an active phase based on at least one noble or non-noble metal of group VIII or of group Ib of the periodic classification ... | 11/26/1991 |
| 5043498 | Process for the hydrogenation of conjugated diene polymers having alcoholic hydroxyl groups A process for the hydrogenation of conjugated diene polymers having alcoholic hydroxyl groups, is provided. In the process, reduced nickel is used as a catalyst and an ether or a mixture of an ether and a hydrocarbon is used as a solvent for the hydrogena... | 08/27/1991 |
| 4734540 | Catalyst for the selective hydrogenation of polyunsaturated organics A process is presented which is useful for the selective hydrogenation of polyunsaturated organic compounds. The resultant product of such a reaction produces the monoolefinic equivalents of the hydrogenated polyunsaturated organic compounds. The catalyst... | 03/29/1988 |
| 4734536 | Process for producing cycloolefins A process for producing a cycloolefin in high selectivity and yield by partial hydrogenation of a monocyclic armoatic hydrocarbon with hydrogen is disclosed. In this process, the hydrogenation reaction is carried out under a neutral or acidic condition in... | 03/29/1988 |
| 4734534 | Preparing cis-olefinic compounds from acetylenic compounds Novel alumina-supported nickel boride catalysts prepared by the borohydride promoted reduction of nickel arsenate are described. Method of catalyst preparation and process for hydrogenation of acetylenic and diolefinic compounds employing the invention ca... | 03/29/1988 |
| 4716256 | Hydrogenation of dienes Process for the selective hydrogenation of diolefinic compounds to monoolefinic compounds employing catalyst consisting essentially of elemental nickel on an inorganic support in the presence of hydrogen and at least one nitrogen-containing compound is di... | 12/29/1987 |
| 4645849 | Hydrogenation of unsaturated hydrocarbons with cyclometallated transition metal catalysts A method for hydrogenating olefins and alkynes is provided wherein the unsaturated hydrocarbon is reacted under mild conditions in the presence of a cyclometallated transition metal catalyst which shows greater resistance to degradation caused by oxidatio... | 02/24/1987 |
| 4590319 | Method for the partial hydrogenation of conjugated dienes A method for the partial hydrogenation of conjugated dienes, characterized in that a chain conjugated diene in which the conjugated two double bonds have different numbers of substituents, is hydrogenated at a temperature of not higher than 50° C. in the... | 05/20/1986 |
| 4575572 | Method for producing cycloolefins A method for producing cycloolefins useful as an intermediate material for lysine, caprolactam, adipic acid, medicines, agricultural chemicals, dyes and the like, which comprises partial hydrogenation of aromatic hydrocarbons with hydrogen gas in the pres... | 03/11/1986 |
| 4503249 | Hydrogenation catalysts Iron (II) hexacyanocobaltate and ruthenium (III) hexacyanocobaltate have been found to be useful in the catalytic hydrogenation of organic materials.... | 03/05/1985 |